# Experiments and Error Analysis: Ideal Gas Law and the Molar Enthalpy of Vaporization Assignment Words: 461

Discussion Section In the experiment the main concepts were the ideal gas law, the molar enthalpy of vaporization (, and the. Using the equation and the plotted graph we know that the slope is equal to , with the intercept C. With the plotted points of Inp and IIT we can find the value. We also know that is independent of temperature as long as the temperature range is limited and the pressure is about 1 atm, which in our situation both are true. A simple but key procedure that was made in the experiment was when the 10 ml eaker was inverted and put into the 1000ml beaker.

This is important because this is when the air bubble was made sure to have the same pressure as the room and satisfy the equation. When the 1000ml beaker containing the inverted 10 ml graduated cylinder with the air bubble was heated to about 80 degrees Celsius, the air bubble expanded due to the additional water vapor and the expansion of gas at higher temperatures. Cooling the water in the 1000 ml beaker to about 5 degrees Celsius made it possible to find the number of moles of present air because the water vapor is egligible at this low of a temperature.